Mathematics · Ratio and Proportion
If (a + b) : (b + c) : (c + a) = 7 : 4 : 5 and a + b + c = 16, then what is the value of (a2 + b2 + c2) : (ab + bc + ca)?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 126 : 19✓
- 219 : 26
- 311 : 9
- 413 : 11
Correct answer
26 : 19
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